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3) I run it from Kismet the whole things loaded and ready to go in a few seconds

4) It really depends on what you mean by a good signal. The Alfa is more powerful than your dlink so it will also pick up more noise than your d-link does. If your router is sharing the same channel ( or even near ) as others in your area the Alfa can pick these up along with other wifi adaptors ect. All this extra noise can reduce consistency and slow down the old injection there. Also having high power radio devices too close together can be damaging. I have seen speeds as low as 50iv/s up to almost 200 iv/s. Its horses for courses, at the end of the day you loose a bit of speed for having a device that has a longer range its just the characteristics of radio. But hey what’s the rush I've had aircrack-ptw cracking 64bit after just 15-20k ivs 104bit with 60-80k

But once actually connected to device I get full 54g connectivity as long as there is a consistent signal 35% or higher. Again having other devices sharing the same channel can affect the consistency of that.

4) Yes very good points about the noise, something I didn't appreciate but makes sense now that you mention it. The speed itself isn't important (as you say with aircrack-ptw 50,000 ivs now seems like an extravagance!) but there are definitely some qwerks with the (perhaps just my) alfa.

Do you also notice that when you scan with airodump-ng a lot of networks can show up with a signal strength of 100-140? As I walk around my house I can get ranges from 80-130, which just seems a little strange to me (why is the driver allowing > 100 ?)

Also, as I said assuming I'm downstairs giving a good 10 -15 meters clearance from my AP, with good signal strength, my ivs/sec fluctuates between 5/sec and 120/sec. Nothing is stable, it will bounce up and down all the time.

Seeing as my D-link maintains a constant 300+/sec, I automatically assumed I was doing something wrong!

However - that all said, the Alfa IS an amazing device with the range on it that is just staggering!

Then I open Kismet:
I hit shift+s to sort then hit c to sort by channel. Hit enter on my ap to view info on the ap. like channle number mac adress and the routers name. Hit q to get out of that then shif+l to lock the wifi adaptor to that channel

Shell5:
aircrack-ptw abc-01.cap
If you hav set up your router with 64bit encryption then run this off after about 20,000 - 25,000 packets 104bit will probably need more like 70,000 or more.
Also need to make sure you have the aircrack-ptw file in the root directory

I have a txt file with all the commands saved so all i have to do is copy and paste the info from kismet then copy pase the commands into the shell windows, saves a lot of typing! If you dont already have aircrack-ptw baxter has a sticky in the noob section where you can download it.